The two groups kept fighting even as officers worked to control what was a volatile situation, police said. Although several individuals fled the fight scene, township police pursued them into Union.

The 17-year-old, who is from Hillside, was taken to University Hospital’s trauma unit. Two others suffered superficial wounds and declined transportation.

The juvenile, whose name was not released because of his age, is still hospitalized with non-life-threatening wounds, Conlon said.

Police are investigating the juvenile’s actions during the fight, he said.

“He has not been charged as of yet,” he said.

Police determined that the fight was over two girls. There is no indication that it was a result of criminal street activity, police said.

“Our detective bureau is still investigating the incident to determine if further charges are warranted or if other people were involved. The case is still considered an open investigation,” Conlon said.

The other adults arrested were Dominique Daniels, 21, of Oregon Street, on charges of aggravated assault and weapons offenses; Gregory Carter, 19, of Newark, for resisting arrest and obstructing the law; Russell Lighten, 21, of Newark, for resisting arrest and obstructing the law; Aishon White, 19, of Union, for resisting arrest and obstructing the law; Kevin Telfair, 20, of Newark, for disorderly conduct; and Quadira Whitehead, 35, of Newark, for making terroristic threats and weapons offenses.

Two 17-year-olds were also arrested. One, from Union, was charged with resisting arrest and obstructing the law, and the other, from Newark, was charged with disorderly conduct.

Anyone with information about the fight is asked to call the Maplewood Police Detective Bureau at (973) 761-7905.